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- W2556888884 abstract "Chehelkureh c opper mine projec t at hand is about 110 kilometers northwest of Zahedan. Because of the depth of the bulk of the ore mining, underground mining method for extrac ting it has been selec ted. Firstly, geomechanical parameters of rock mass using in situ experiments and empirical formulas obtained. The results show that by inc reasing the mineral quartz, uniaxial c ompressiv e strength trend is clearly upward. This also applies to the mineral c alcite but irregular trend exists and is equal percentages of different c ompressiv e strength. Iron oxide reduces the compressive strength but less than 10 per cent of their impact resistance loses. Feldspar minerals appear only in spec ific cases and in some cases increased the compressive strength was not impressive. Clay minerals c ausing downward effect on the charts and uniaxial compressiv e strength dec reases. Modulus increases with inc reasing quartz. Modulus increased with an increase in the percentage of the mineral c alcite is between 20 and 25, the c onnec tion is lost and high modulus changes." @default.
- W2556888884 created "2016-11-30" @default.
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- W2556888884 date "2015-01-01" @default.
- W2556888884 modified "2023-09-24" @default.
- W2556888884 title "Geomechanical parameters and petro graphical investigate the tunnel rock mass of Chehelkureh copper mine" @default.
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